@misc{indiciae40ce0012a163,
  title = {A tunnel runs through it — An inside view of the Tualatin Mountains, Oregon},
  author = {Ken Walsh and Gary L. Peterson and Marvin H. Beeson and Ray E. Wells and Robert J. Fleck and Russell C. Evarts and Alison Duvall and Richard J. Blakely and Scott Burns},
  year = {2011},
  doi = {10.3133/sim3144},
  url = {https://pubs.usgs.gov/publication/sim3144},
  note = {Source identifier: sim3144}
}